Improvement in leather boarding and graining machines



2 Sh --S L. TUWNSEND. ee hee Leather-Boarding and Graning-vachines. No, 126105l PatentedApr|23,1872.

vWaff @fiamma 2 Sheets-Sheet 2.

LTOWNSEND.

Leather-Boarding and Graining-Mac'hines.

No. 126,105. PatemedApri|23,1a72.

@Hummm UNITED .STAT-Es LOUIS TOWNSEND, OF TERRE HAUTE, INDIANA.

PATENT OFFICE.

IMPROVEMENT IN LEATHER BARDING AND GRAINING MACHINES.

Specification forming part of Letters Patent No. 126,105, dated April 23, 1872.

' Fig. 2, Sheet 1, is a detail vertical section of the same, taken through the line .fr a', Fig. l.

Fig. 3, Sheet 2, is a detail sectional view of the same, taken through the line y y, Fig. 1.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved machine for boarding and graining leather which shall be simple in construction, convenient in use, and effective in operation, doing its workl quicker and better than it can be done by hand, and with substantially the effect of hand-boarding upon the leather; and it consists in the construction and com- Y bination of the various parts of the machine,

- longitudinally 4upon their inner sides to receive the bars or frame B, which slide up and down in said grooves, and to the upper parts of which are attached the bearings in which the journals of the upper boarding and graining roller U revolve. D is the lower boarding and graining roller, the journals of which revolve in stationary bearings formed upon or attached to the frame A. The rollers C D should be covered with ne emery to enable them to take hold ot' lthe leather to be operated upon. To the projecting journals of the rollers C D, at one side of the machine, are attached gearwheels E F, the teeth of which mesh into the teeth of the intermediate gear-wheel G, the

journals of which revolve in bearings in the frame A, and in a bracket, H, attached to said frame A. To the journal of the intermediate gear-wheel Gis attached a large bevel-gear wheel, I, which serves as a ily-wheel, and the teeth of which mesh into the teeth of a small bevel-gear wheel, J, attached to the shaft K, and which revolves in brackets attached to the frame A, and to which motion is given from any convenient power by a crank or pulley in the ordinary manner. By this construction the upper roller C can be raised for the convenient insertion of the leatherwithout disarranging the gearing. The frame B is .held down to hold the upper roller G down upon the lower roller D by the spring L, which rests upon the bottom bar of said frame B and passes against the lower cross-bars of the `frame A. The tension of the spring L is regulated by a set-screw, M, which passes through the said cross-bars of the frame A and bears against the said spring L. N are levers, the outer ends of which are connected by a crossbar, O, which serves as a foot-lever or treadlc for operating said levers. The inner ends of the levers N are pivoted to the lower parts of the bars or frame B by bolts, screws, or pins, which pass through slots or elongated holes in the said levers and into the said bars or frame. The levers N are pivoted to the frame A by bolts, screws, or pins, which pass through holes in the said levers and into the said frame. P is a roller made somewhat smaller than the rollers C D, so as to enter the space between the forward sides of the said rollers C D and hold the leather firmly against them. The journals of the roller l? revolve in bearings in the outer ends of the levers Q, which are pivoted t0 the frame A by bolts, screws, or pins, which pass through short slots in the levers Q and into the said bars or frame. Bythis construction, as the frame B and upper roller G are raised, the levers Q are operated to throw back the roller P to allow the leather to be conveniently introduced. To the upper ends of the levers Q are attached upwardlyprojecting spring-arms, E, to the inner ends of which are attached the ends of the blade or plate S, which passes into the space between the rollers C D to hold the leather folded while being acted upon by the said rollers C D.

In using the machine the outer ends of the levers N are pressed down, which raises the frame B and upper roller C, and operates the lever Q, to throw back the roller P and blade S. The leather is then passed between the rollers C D and the blade S, and as the levers N are released the spring L forces the frame B and roller U down, which operates the levers Q to throw the blade S and roller P forward, the blade S folding or doubling the leather,

and the roller P holding it firmly against the rollers C D. If, now, the machine is started the rollers D P will draw the leather inward and the rollers C P will draw it outward, while the blade S will keep it doubled or folded and pressed in between the rollers C D, the fold of the leather constantly changing its place, and

the same effect being produced as is produced 2. The combination of the levers Q Yand spring-arms R with the sliding frame B and with the roller P and 'blade S, to enable said roller and blade to be operated by the move ments of said frame, substantially as herein shown and described, and for the purpose set forth.

3. The combination of the levers N and adjustable spring L with the frame A and slid-4 ing frame B, substantially as hereinshown and described, and for the purpose set forth.

LOUIS TOWNSEND.

Witnesses:

J AMES'T. GRAHAM, T. B. Mosrmn. 

